"The Good Bad Mother" is a Korean comedy-drama series about a single widow who owns a pig farm and raises her young son. Yeon Sun has been strict with Kang Ho from a young age: she doesn't want him to follow in his late father's footsteps, so she teaches him to fight for his own interests and carve out a place for himself. The lessons don't go to waste: soon, the boy becomes a famous prosecutor and moves his mother to the big city. But after an accident, he completely loses his memory and regresses to childhood. Yeon Sun has to repeat her "young fighter course" to her son.